Science: Rich Diggings

A glittering patch of quartzite, high on Sheguindah Bay Hill, was just
the thing to catch an archaeologist's eye. Knowing that Stone-Age
Americans made primitive tools from the easily workable material,
Thomas Lee, a dedicated digger from Ottawa's National Museum, scrambled
up the rocky slope on Lake Huron's Canadian shore to have a look. Half
an hour later, he was poking and prodding one of the richest diggings
in North America. The forest floor was dotted with crude knives,
scrapers, and quartz chips. "I felt drunk," he said. "It looked as
though the Indians had heard me coming, dropped everything, and...